package servletDemo;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet(name = "ServletH", value = "/ServletH")
public class ServletH extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        HttpSession session = request.getSession();
        System.out.println(session);
        // 取出session中存储的数据
        String v = (String) session.getAttribute("key");
        System.out.println(v);
        // 根据key删除session中存储的数据
        session.removeAttribute("key");
        // 销毁
        session.invalidate();
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    }
}
